Mold for the manufacture of concrete blocks.



T. CORNUELLE. MOLD FOR THE MANUFACTURE OF CONCRETE BLOCKS.

APPLICATION FILED SEPTJO, 1911- Patented Mar. 19,1918.

2 SHEETS-SHEET v T. CORNUELLE. MOLD FOR THE MANUFACTURE OF CONCRETE BLOCKS.

APPLICATION FILED SEPT,20. 19H.

*1 ,260, 1 47 Y Patented Mar. 19, 1918.

4% Q mammal THEODORE CORNUELLE,. OE, CINCINNATI, OHIO.

MOLD FOR THE MANUFACTURE OF CONCRETE BLOCKS.

Specification of Letters Patent.

Patented Mar. 19, 1918.

Application filed september 20, 1917. Serial No. 192,249.

To all whom it may concern:

Be it known that I, THEODORE CoRNnn E, a citizen of the United States, residing at Cincinnati in the county of Hamilton and State of (lhio, have invented certainnew and useful Improvements in Molds for the Manufacture of Concrete Blocks, of which the following is a specification.

This invention relates to molds, or forms for the manufacture of concrete bloc-ks.

The object of my invention is to provide a simple and eflicient mold which can be constructed of metal, easily assembled and knocked down, and the parts conveniently dipped in oil before the concrete is poured thereinto.

Another "object of my invention is to provide a mold which will produce a block the gace of which will appear as a cement brick ace.

Another object of my invent-ion is to provide a mold in which boulders may be conveniently placed before filling with concrete, or, portions of bricks and the like may be inserted methodically, so'that the concrete may be poured in around .them, thereby providingablock which when completed :has the appearance of boulder brick or stone masonry.

Still another object of my invention is to provide means whereby a series of molds or cells may be built up bystringing the parts thereof alonga beam or beams, which might be readily called arbors, so :that when -;tl1e molds are assembled they may be securely clamped on-the said arbors, forming a single unit comprisinga series ofcells for blocks.

In the accompanying sheets of drawings which show a preferred construction I of :my

invention,

Figure lis a perspective of a .mold constructed in accordance with :my invention and resting ona suitable floor.

Fig. 2:is aperspecti-ve ofa'partly assembled portionof a mold showing moreclearlythe construction of the cores employedand the manner of stringing the molds on a square arbor.

Fig. 3 is-a perspective of aside plate of the mold.

Fig. 4 is an elevation of thefrontnofone of the :cores employed.

Fig. 5 is a perspectiveof oneof-the cores.

Fig. 6 is atop plan ofithe bottom of the mold showing the recesses. provided therein and boulders in place. 7

Fig. 7 is a side elevation of same after the block has been molded.

gs- 8 and 9 are similar views showing the bottom of the mold arranged for the pelpeptlon of portions of brick, stone or the Fig. 10 is a perspective of the block when completed to represent brick masonry.

Referring more particularly to the drawngs: 1 represents an end plate which may, if desired, be .a permanent one. This plate is provided with square apertures through which the square arbors 2 are adapted to pass.

In describing the following parts they will be described in the order in which they are used in assembling a complete mold.

It will be understood that two core holes 3 are usually provided in each concrete block so that two arbors 2 are provided. Cores .4: are first strung upon the arbors 2 as in Fig. 2 and consist of a substantially square or rectangular frame open at the ends. The metal frames are preferably constructed of a material having a certain amount of spring thereto so that they may be contracted slightly when it isdesired to knock down the mold after the block is completed.

Fastened along the central part of each side of the core and projecting inwardly, '1 provide a brace block 6, the inner exposed face of-whi-ch engages thearbor 2 when the core is strung thereon. The sides of the core, before being strung upon the arbor 2 assume a somewhat collapsed formas shown in Fig. 5 and are held in this position by springs 7 extending diagonally across the corners of the core at each end thereof and on the inside. Thus the brace blocks are heldin a position which allows a small passageway between them at the center of the core for the arbors 2 to pass.

The arbors are provided with tapering ends 19 so that the cores may be forced thereoncagainst the pressure of the springs 7. Vhen forced thereon the sides of the core are forced'to their straight position as shown in Fig. 2, thereby forming fiat surfaces on the outside of the core for molding the core hole 3. v

The cores 4 are passed along the arbors 2 until they engage theend plate ,1 and then the dividing plate 8, Fig. 3, is strung along the arbors 2. The plate 8 isprovided with square apertures 9 of the same shape. as the arbors 2, andaresalso provided withflanges 10 attheendathe said. flanges extending t right, angles thereto forming braces and stops for the end plates which will be described. Similar flanges 11 are provided at the bottom of the dividing plates 8 to support the floor of the mold or cell.

' End plates 14 are provided and are inserted at the ends of each cell resting against the inside of the flanges 10 of the dividing plates 8. Projections 15 on the end plates at one end of the cell, and channels 16 at the other end are provided to form the tongue 15 and groove 16 respectively on the completed blocks forr convenlence in building. Any desired number of these tongues and grooves may be provlded on each block by providing for same on the mold end plates 1%. The cores t and dividing plates 8 arealternately strung upon the arbors 2 until a sufficient number of cells have been provided to produce say about ten blocks.

The bottom plates 12, Figs. 7 and 9, are

then inserted and rest on the flanges 11 of the dividing plates 8 and are equipped with a seriesof partitions or upwardly extending projections 13 boulders, bricks and the like to be inserted in the pockets or recesses formed thereby; or when nothing is inserted the concrete of a fine consistency is poured into them thereby forming a block the face of which will appear as being made up of cement'bricks.

After the parts of the mold are all assembled the molds are drawn tightly together by means of driving wedges 17 into elongated openings in the arbors a short distance, the wedges bearing against the outside of the end plates and one end of the said slots. The wedges are preferably provided with a shoulder 18 which marks the limit of its path and forms a gage for tightening up the molds.

The floor 20 shown may be the floor of a car if desired, and is cut away at 21 to allow lifting means to be inserted under the blocks when they are ready to be removed from the car or floor 20.

It will be seen that owing to the simpleness of the construction of the different parts of the device that the parts can all be conveniently dipped in a solution or in oil very easily, before being assembled, which has been found to be a very necessary step in the process when using metal molds.

lVhen it is desired to knock down the mold after the blocks are hard, the wedges 17 are knocked out of the arbors andthe arbors drawn out. As soon as the arbors are drawn out the cores 4 collapse slightly, making it an easy matter to draw them' out in their turn.

It will be noted that when bricks of any color or type are used in the face of the so arranged as to allow the bricks over a brick veneer job such as are well known. It will also be understood that stone masonry can be imitated to advantage by arranging accordingly the strips 12 on the bottom plates. of the molds. Furthermore, the projections 12 may be constructed so as to leave a shoulder around the surfaces imitating stone so that the same may be chiseled or pitched 05 to imitate the finer chiseled or pitched quality of stone masonry.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. A mold of the character described comprising an arbor, side plates on said arbor forming the sides of said mold, a core on said arbor between said side plates, bottom and end plates, means on said side plates for holding said bottom and end plates in proper position, and means for drawing said side plates together whereby the parts of the mold are clamped together.

2. A mold of the character described come prising a series of divisional plates forming the sides of the cells of the mold, arbors passing through said plates, cores on said arbors and disposed between said plates, end

plates, bottom plates, and means whereby all of said plates and cores are clamped tightly together on said arbor, substantially'as described.

3. A mold of the character described comprising an arbor, side plates on said arbor forming the sides of said mold, a core on said arbor, said core comprising a metal rectangular frame open at the ends, blocks mounted on the inside walls of said frame, said blocks extending inwardly to engage the arbor, springs fastenedto the sides of said frame tending to draw the sides of the frame inwardly, bottom and end plates, means for holding said bottom and end plates in proper position, and means for drawing said sideplates together, whereby the parts of the mold are clamped together.

4. A mold of the character described comprising an arbor, side plates on said arbor forming the sides of said mold, a core on said arbor, said core disposed between said side plates, a bottom plate, said bottom plate provided with upwardly extending projections forming pockets for bricks, boulders, stones and the like, end plates,;means on said side plates for holding said bottom and end plates in proper position, and means for drawing said side plates together whereby the parts of the mold are clamped together, substantially as set forth.

5. A mold of the character described comprising an arbor, side or partition plates each provided with an aperture through whichsaid arbor is adapted to pass, flanges I said flanges, and means for drawing said side plates together whereby the parts of the mold are clamped together, substantially as set forth.

6. A mold of the character described comprisin a pair of arbors tapered at one end thereo side plates having apertures to accommodate said arbors, contracting cores adapted to be strung upon said arbors and 19 disposed between said side plates, end and bottom plates, one of said end plates being provided With a vertical projection and the other with a corresponding channel to form a tongue and groove at opposite ends of the mold, slots in said arbors, means engaging said slots for drawing said side plates toward each other to clamp and hold the said parts of the mold together, substantially as described.

THEODORE CORNUELLE.

copies 0! this patent may be obtained for five cents each, by addressing the "Commissioner of Patents,

Waahingtomfl. 

